<template>
    <div class="recommend">
      <!--数据使用最新获取的数据做渲染-->
      <scroll class="recommend-content" :data="discList" ref="scroll">
        <!--此处必须用空div包裹滚动区域-->
        <div>
          <div class="slider-wrapper" v-if="recommends.length">
            <slider>
              <div v-for="(item,index) in recommends" :key="index">
                <a :href="item.linkUrl">
                  <img :src="item.picUrl" alt="" @load="loadImage" class="needsclick">
                </a>
              </div>
            </slider>
          </div>
          <div class="recommend-list">
            <h1 class="list-title">热门歌单推荐</h1>
            <ul>
              <li v-for="(item,index) in discList" :key="index" class="item" @click="selectItem(item)">
                <div class="icon">
                  <img v-lazy="item.imgurl" width="60" height="60" alt="">
                </div>
                <div class="text">
                  <h2 class="name" v-html="item.creator.name"></h2>
                  <p class="desc" v-html="item.dissname"></p>
                </div>
              </li>
            </ul>
          </div>
        </div>
        <div class="loading-container" v-show="!discList.length">
          <loading></loading>
        </div>
      </scroll>
      <!--router-view对应二级路由的容器-->
      <router-view></router-view>
    </div>

</template>

<script type="text/ecmascript-6">
  import {getRecommend, getDiscList} from 'api/recommend'
  import {ERR_OK} from "api/config";
  import Slider from 'base/slider/slider'
  import Scroll from 'base/scroll/scroll'
  import Loading from 'base/loading/loading'
  import {mapMutations} from "vuex";
    export default {
        name: "recommend",
      data() {
          return {
            recommends: [], // 轮播
            discList: [], // 歌曲列表
          }
      },
      created() {
        this._getRecommend()

        this._getDiscList()

      },
      methods: {
          selectItem(item) {
            console.log(item)
            this.$router.push({
              path: `/recommend/${item.dissid}`
            })
            this.setDic(item)
          },
          _getRecommend() {
            getRecommend().then((res) => {
              if (res.code === ERR_OK) {
                this.recommends = res.data.slider
              }
            })
          },
          _getDiscList() {
            getDiscList().then((res) => {
              if (res.code === ERR_OK) {
                this.discList = res.data.list
              }
            })
          },
          loadImage() {
              // @load === window.onload事件图片的高度撑开slider的高度并获取slider的高度 这样不管slider数据什么时候加载都可以正常滚动
              // 使用标志位使图片只加载一次
            if (!this.checkLoaded) {
              this.$refs.scroll.refresh()
              this.checkLoaded = true;
            }
          },
        ...mapMutations({
          setDic: 'SET_DISC'
        })
      },
      components: {
        Slider,
        Scroll,
        Loading
      }
    }
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
  @import "~common/stylus/variable"

  .recommend
    position: fixed
    width: 100%
    top: 88px
    bottom: 0
    .recommend-content
      height: 100%
      overflow: hidden
      .slider-wrapper
        position: relative
        width: 100%
        overflow: hidden
      .recommend-list
        .list-title
          height: 65px
          line-height: 65px
          text-align: center
          font-size: $font-size-medium
          color: $color-theme
        .item
          display: flex
          box-sizing: border-box
          align-items: center
          padding: 0 20px 20px 20px
          .icon
            flex: 0 0 60px
            width: 60px
            padding-right: 20px
          .text
            display: flex
            flex-direction: column
            justify-content: center
            flex: 1
            line-height: 20px
            overflow: hidden
            font-size: $font-size-medium
            .name
              margin-bottom: 10px
              color: $color-text
            .desc
              color: $color-text-d
      .loading-container
        position: absolute
        width: 100%
        top: 50%
        transform: translateY(-50%)
</style>
